• Silurian of Algeria (3 collections), Argentina (1), Canada (2: Quebec, Québec), China (15), Denmark (5), France (2), Morocco (1), Paraguay (1), Saudi Arabia (1), Serbia (5), Sweden (1), Thailand (1), the United Kingdom (4), United States (11: Alaska, Idaho, New York), Western Sahara (1)

• Uhaku of the Russian Federation (2), Sweden (1)

• Dobrotivian of France (1), Portugal (1)

• Whiterockian of Canada (4: Newfoundland and Labrador)

• Arenigian of United States (1: Alaska)

• Arenig of China (7)

• Ningkuo of China (11)

• Ordovician to Silurian of Canada (2: Québec), the Russian Federation (1), United States (2: Alaska)

• Ordovician of Argentina (8), Australia (2), Belgium (2), Bolivia (1), Canada (40: New Brunswick, Northwest Territories, Northwest Territories and Yukon, Nunavut, Ontario, Quebec, Québec, Yukon), China (127), Czechia (4), Kazakhstan (5), Latvia (1), Lithuania (2), Malaysia (1), Morocco (1), New Zealand (17), Norway (9), Peru (1), the Russian Federation (23), Spain (1), Sweden (23), Türkiye (2), the United Kingdom (7), United States (129: Alaska, Idaho, Iowa, Kentucky, Michigan, Nevada, New York, Ohio, Oklahoma, Pennsylvania, Texas, Virginia), Venezuela (1), Vietnam (1)

Total: 495 collections including 725 occurrences